| Abstract |
| In wastewater treatment plant, most of oxidized nitrogen is nitrate in aerobic and anoxic reactors. In this study, for this reason, we investigated the removal of nitrogen compounds via anaerobic ammonium oxidation (anammox) and denitrification by cell decay or external organics using a continuous flow reactor. The experiments consisted of three cases such as only media packed (case 1), only organic supplied (case 2) and both media packed and organic supplied (case 3). The mass balances for each case were conducted to analyze the nitrogen removal mechanism. FISH(fluorescence in situ hybridization) and image analysis technique was also used to calculate the content of anammox bacteria and nitrifying bacteria for each case. Conclusively, the organic supply made anammox reaction decreased and denitrification activated. Media supply was helpful to activate anammox. FISH analysis also presented that the content of anammox bacteria such as Brocadia Anammoxidans and Kuenenia Stuttgartiansis was increased when media was supplied. |
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| Key Words |
| Anaerobic ammonia oxidation, Nitrate, Organism, Endogeneous denitrification |
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